The driver who was behind the wheel of the truck that slammed into a limo van carrying Tracy Morgan, critically injuring the actor and killing another man, has pleaded not guilty.

Kevin Roper, 35, entered the not guilty plea Wednesday, the Associated Press reports. He was charged with one count of death by auto and four counts of assault by auto in the wreck early Saturday morning on the New Jersey Turnpike.

The tractor-trailer he was driving, owned by Wal-Mart Stores Inc., crashed into a limousine van carrying Morgan and other passengers. Morgan and two others were injured.

The accident killed James McNair, 63, a comedian better known by his stage name, Jimmy Mack.

Roper was released from custody in lieu of $50,000 on Saturday. A criminal complaint has suggested he was awake for more than 24 hours before the crash, and the state police previously said he had failed to notice slower traffic ahead of him.